1) UMK3 was only released alone on XBLA, and was delisted in 2010 following WB's purchase of the MK IP
2) This version was directly based on the arcade version
3) Brutalities were NEVER in the arcade version of UMK3. Only on the SNES and Genesis ports, and in MK Trilogy. Last I checked, the only version that counts is the Arcade version.